.tableHeardOption{
    display: inline-block;
    .reference{
        font-size: 16px;
        color: $blue;
        cursor: pointer;
        padding: 0 2px;
        background-color: transparent;
        border: none;
        line-height: 20px;
        &:hover, &:active, &:focus{
            background-color: transparent;
        }
    }
}